| Westhoughton to Silver Firs (Washington) | 4,591.62 mi (7,389.50 km) |
| Westhoughton to Silver Spring (Maryland) | 3,521.90 mi (5,667.95 km) |
| Westhoughton to Silver Springs Shores (Florida) | 4,209.01 mi (6,773.74 km) |
| Westhoughton to Silverdale (Washington) | 4,616.79 mi (7,430.01 km) |
| Westhoughton to Silverton (Oregon) | 4,772.57 mi (7,680.71 km) |
| Westhoughton to Simi Valley (California) | 5,275.43 mi (8,489.98 km) |
| Westhoughton to Simpsonville (South Carolina) | 3,935.13 mi (6,332.98 km) |
| Westhoughton to Sioux City (Iowa) | 4,081.85 mi (6,569.10 km) |
| Westhoughton to Sioux Falls (South Dakota) | 4,041.80 mi (6,504.65 km) |
| Westhoughton to Skokie (Illinois) | 3,791.11 mi (6,101.20 km) |
| Westhoughton to Sleepy Hollow (New York) | 3,301.48 mi (5,313.22 km) |
| Westhoughton to Slidell (Louisiana) | 4,457.58 mi (7,173.79 km) |
| Westhoughton to Smithfield (North Carolina) | 3,741.16 mi (6,020.81 km) |
| Westhoughton to Smithfield (Utah) | 4,631.49 mi (7,453.67 km) |
| Westhoughton to Smithville (Missouri) | 4,172.62 mi (6,715.18 km) |
